alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Sabsik.FL.B!ml Checkin"; flow:established,to_server; content:"|02|"; startswith; content:"|05 4c 41 75 74 6f 20 28|"; offset:5; depth:8; fast_pattern; content:"|29|"; distance:0; isdataat:!30,relative; reference:md5,0792e225ebae5021f0dd6c333026ee00; classtype:command-and-control; sid:2034313; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_01, deployment Perimeter, malware_family Win32_Sabsik_FL_B_ml, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_01;)